Cavity filter for low PIMD using hybrid cap bolt
US10763564B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 15, 2018 |
| Grant date | Sep 1, 2020 |
| Priority date | — |
| Expiry date | Jul 21, 2038 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01P7/06
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A cavity filter for low PIMD using hybrid cap bolts includes: a housing having therein a plurality of cavities partitioned by separation walls and an open upper portion; an upper plate coupled onto the upper portion of the housing and provided therein with a plurality of tuning bolts; a plurality of air blowing work holes formed respectively on the upper plate and outer sidewalls of the housing and corresponding to the plurality of cavities; and a plurality of hybrid cap bolts formed of different kinds of materials of metal and non-metal so as to have repulsive forces against and to be coupled to respective plurality of air blowing work holes. Thus, metal debris present inside a cavity housing are removed through an air blowing method by using an air blowing work hole formed in a cavity housing and a hybrid cap bolt for reducing PIMD.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.